Guard for heater pipes



Nov. 29, '11927. ,65,804

W. S. PRITCHARD GUARD FOR HEATER PIPES Filed Oct. 25, 1926 2 Sheets-Sheet l Nov.,y 29, E927.

W. S. PRITCHARD GUARD FOR HEATER PIPES Filed 001;. 25, 1926 2 Sheets-Sheet 2 Patented Nov. 29A 1927.

UNITED STATES PATENT OFFICE.

WILLIAM S. PRITCHARD, OF DETROIT, MICHIGAN, ASSIGNOR TO MOTOR PRODUCTS CORPORATION, OF DETROIT, MICHIGAN, A CORPORATION OF NEW YORK.

GUARD FOR HEATER PIPES.

Application filed October 25, 1926. Serial No. 144,154.

This invention relates to guards for heater pipes and more particularly devices of this character for use in connection with motor busses and motor cars wherein the exhaust pipe is extended through the passenger compartment of the vehicle for heating purposes.

One of the primary objects of this invention is to provide pipe housings of the described character which may be manufactured economically and with convenience and dispatch and which furthermore may be suiciently complete in the number and design of the units employed so as to enable the exhaust pipe to be completely housed irrespective of its length or the nature of its configurations within the vehicle.

Another object of the invention is to provide a guard or housing of this character which while a'ording a. protective covering for the exhaust pipe permits of the ready radiation of the heat therefrom and prevents the accumulation of dirt within the housing. Another advantage obtainable with the 4herein described construction is that the pipe as well as the housing may be arranged in spaced relation to the floor of the vehicle, in counter distinction to heretofore known constructions, so as to facilita/te cleaning underneath the pipe.

The various objects, advantages and novel details of construction of the invention will be made more clear as this description proceeds, especially when considered 1n connection with thek accompanying drawing, wherein Figure 1 is an elevational view of a ortion of a vehicle wall showing the app ication of my improved guard;

Figure 2 is a fragmentary sectional view through a vehicle or the likeland through the exhaust pipe heater and my improved guar S Figure 3 is a fragmentary elevational view of one of the units;

Fi re 4 is a sectional view taken substantlally on the plane indicated by 4-4 of Figure 3;

Figure 5 is an elevational view of another one of the units; l

Figure 6 is a sectional view taken substantially on the plane indicated by 6--6 of Figure 5;

Figure 7 is a side elcvatioxx view of another one of the units emplo d;

Figure 8 is an end elevational view o the unit illustrated in Figure 7;

Figure 9 is a side elevational view of still another one of the units employed; and

Figure 10 is an end elevational view of the structure illustrated in Figure 9.

Referring now particularly to the drawing wherein like reference characters indicate like parts, it will be noted that in Figures 1 and 2 I have illustrated fragmentarily la portion of a motor vehicle or the like having a vertical wall 10 and an exhaust heater pipe 11. Heretofore4 it was customary to dispose the pipe 11 at the juncture of the wall 10 and the bottom lor floor 12`of.the vehicle and to inclose the same by a guard or housing which extended diagonally from the Hoor to the Wall. Such a construction involved several disadvantages o f note. In the first place dirt and other foreign matter accumulated within the housing and interfered materially with the radiation of the heat from the pipe. It was also found with constructions of this character that the housings could not loe'madel to accommodate the turns or curves inthe pipe 11 and frequently the pipe 11 was left exposed at points, for instance, at the end-of the vehicle where the heater pipe 11 was given a sharp-turn. Furthermore with such heretofore known constructions less surface was exposedto the interior of the vehicle with the result that an inefficient amount of the heat was utilized.

In accordance with the present invention,

I propose employinga housing'w-hich may, for instance, comprise a series of units or sections including straight sections 13, elbows or curved sections or units 14 and 15, both of which are longitudinally flanged, and unlanged elbow or curved units 16.

Each of the units or sections is of such a construction as to enable the same to be con- `veniently and economically pressed from sheet metal and is substantially U-shaped in -cross section. Each of the units 13, 14 and 15 are provided at their longitudinal edges with lateral outwardly extending flanges 17 apertured at spaced mtervals as at 18 for engagement by fastening elements 19 whereby the housing may be secured to the vertical wall 10 of the vehicle. It will be noted that the housin sections cooperate with the said vertical wa l to compleetely inclose and' house the pipe 11. It will furthermore be noted that with such a construction the pipe 11 as well as the housing may be spaced above the floor 12 to permit of readily cleaning under they housing and to permit of the free circulation of air thereunder.

Each of the units'13 is preferably formed with a plurality of apertures arranged in the lower half of t-he unit. There are no perforations in the upper or top half of these sections. These perforations permit the circulation of air into the housing where it may come in contact with the heated pipe 11 and also prevent the accumulation of dirt within the housing, as obviously such dirt that accumulates therein may pass through these apertures. The ends 21 of each unit 13 are adapted to engage the adjacent ends of any of the other units and for the purpose of securely attaching the several units one to another apertures 22 are provided wherein fastening means such as rivets may be passed through the overlapping ends of adjacent units to secure the same together.

It will be noted that in Figures 5 to 8, inclusive, elbow units 14 and 15 are illustrated, these units bein substantially similar but of different congurations or curves so as to enable the housing to be carried in the desired direction to accommodate the same to turns in the pipe l1. Each of these units is provided with the reduced ends 23 .wherein they may telescopically engage theA wall structure. Where it is necessary to unite two elbow units a short section or unit similar to unit 18 is employed, the reduced ends of the elbow units telescoping within the ends of such short unit With a construction such as herein described, it is possible to expeditiously and neatly house or inclose the exhaust heater pipes and to also obtain the several advantages in use which have been mentioned hereinbefore. It is likewise possible to manufacture the units comprising this housing in larger quantities with speed and economy, particularly because the several units may be standardized in lengths and shapes such as will accommodate the great# est number of jobs.

I/Vhat I claim as my invention is:

1. In a guard for heater pipes a plurality of straight and curved sheet metal housing sections or units, each unit being substantially U-shaped in cross section with the ends thereof shaped to lit the ends of the adjacentunits and flanges on the longitudinal edges of said units for securing the same to a Wall or the like.

2. In a guard for heater pipes, a plurality of interchangeable straight and elbow units, each unit being substantially U-shaped in cross section, the ends of each unit being shaped for telescopic engagement with the adjacent ends of adjacent units and means on the longitudinal edges of certain ofthe units for attaching the same to a wall or .the like.

In testimony whereof I aiix my signature.

WILLIAM S. PRITCHARD.

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